An infinite loop on large inputs is unrelated to his null-pointer
problem. As SICP makes clear, the imprecision of floating-point
arithmetic means this particular algorithm will not terminate for
large inputs. That is, rounding errors stop it from making progress
when the numbers are large and the
+1 hangs with Clojure 1.2.1 in Slimes REPL on Java 1.6.0_26 (Ubuntu)
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Armando, I get the same behavior as you with Clojure 1.2.1. But if I lein
dep Clojure 1.3.0, I'm back to NullPointerExceptions.
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Note that po
With 1.3/OSX this code worked up to:
user=> (sqrt 1)
100.0
and then hanged here:
user=> (sqrt 10)
~ $
On Oct 13, 7:04 pm, "Alan O'Donnell"
wrote:
> Hi everyone,
>
> I've encountered an unexpected NullPointerException while translating
> some early SICP code into Clo
Hi everyone,
I've encountered an unexpected NullPointerException while translating
some early SICP code into Clojure 1.3.0. In particular, I'm
implementing the iterative sqrt procedure from section 1.1.7.
Here's my code:
(defn square [x] (* x x))
(defn abs [x]
(cond
(< x 0) (- x)
:els
